Connector for joining laboratory glassware



FIG. 1 is a side elevational view of the connector for joining laboratory glassware showing my new design;

FIG. 2 is a cross-sectional view taken along line 2--2 of FIG. 1;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a perspective view thereof.

The broken lines shown in FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a connector for joining laboratory glassware, as shown and described. 